/* Natural Perception Labs — waitlist landing page */

:root {
  --font-display: 'Lora', Georgia, serif;
  --font-body: 'Plus Jakarta Sans', system-ui, -apple-system, Segoe UI, sans-serif;

  /* Light mode — Forest at Midday */
  --color-bg: #F4F1EB;
  --color-bg-shift: #EEEAE0;
  --color-text: #2C3B2C;
  --color-text-secondary: #7A9478;
  --color-primary: #4A7A5A;
  --color-primary-hover: #3F6A4D;
  --color-surface: #D4E4D0;
  --color-accent: #C09040;

  /* Dark surface tokens (used for inverted waitlist island in light mode) */
  --color-dark-bg: #1C2B1C;
  --color-dark-surface: #2A3A2A;
  --color-dark-text: #C8D8C0;
  --color-dark-text-secondary: #7A9478;

  --space-xs: 8px;
  --space-sm: 16px;
  --space-md: 32px;
  --space-lg: 64px;
  --space-xl: 96px;
  --space-2xl: 128px;
  --space-3xl: 160px;

  --radius-sm: 6px;
  --radius-md: 10px;
  --radius-lg: 14px;
  --radius-pill: 100px;

  --transition: 0.2s ease;

  --border-light: rgba(44, 59, 44, 0.12);
  --border-dark: rgba(200, 216, 192, 0.15);

  --content-max: 1080px;
}

@media (prefers-color-scheme: dark) {
  :root {
    --color-bg: #1C2B1C;
    --color-bg-shift: #1F2F1F;
    --color-text: #C8D8C0;
    --color-text-secondary: #5A8060;
    --color-primary: #4A7A5A;
    --color-primary-hover: #5A8A6A;
    --color-surface: #2A3A2A;
    --border-light: rgba(200, 216, 192, 0.15);
  }
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  background: var(--color-bg);
  color: var(--color-text);
  font-family: var(--font-body);
  font-weight: 300;
  font-size: 15px;
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  text-rendering: optimizeLegibility;
}

::selection {
  background: var(--color-primary);
  color: var(--color-bg);
}

h1, h2, h3 {
  font-family: var(--font-display);
  font-weight: 400;
  margin: 0;
  color: var(--color-text);
}

em {
  font-style: italic;
}

a {
  color: var(--color-primary);
  text-decoration: none;
  transition: color var(--transition);
}

a:hover {
  color: var(--color-primary-hover);
}

.skip-link {
  position: absolute;
  left: -9999px;
  top: auto;
  width: 1px;
  height: 1px;
  overflow: hidden;
}

.skip-link:focus {
  position: fixed;
  left: var(--space-sm);
  top: var(--space-sm);
  width: auto;
  height: auto;
  padding: var(--space-xs) var(--space-sm);
  background: var(--color-primary);
  color: var(--color-bg);
  border-radius: var(--radius-md);
  z-index: 100;
}

.visually-hidden {
  position: absolute;
  width: 1px;
  height: 1px;
  padding: 0;
  margin: -1px;
  overflow: hidden;
  clip: rect(0, 0, 0, 0);
  white-space: nowrap;
  border: 0;
}

/* ----- Navigation ----- */

.nav {
  position: sticky;
  top: 0;
  z-index: 50;
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: var(--space-sm) var(--space-md);
  background: color-mix(in srgb, var(--color-bg) 85%, transparent);
  backdrop-filter: saturate(180%) blur(12px);
  -webkit-backdrop-filter: saturate(180%) blur(12px);
  border-bottom: 1px solid var(--border-light);
}

.wordmark {
  font-family: var(--font-display);
  font-weight: 400;
  font-size: 18px;
  letter-spacing: 0.01em;
  color: var(--color-text);
}

.wordmark:hover {
  color: var(--color-text);
}

.nav-actions {
  display: flex;
  align-items: center;
  gap: var(--space-sm);
}

.nav-cta {
  font-size: 13px;
  padding: 10px 20px;
}

/* ----- Buttons ----- */

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  font-family: var(--font-body);
  font-weight: 500;
  font-size: 15px;
  line-height: 1;
  border: none;
  cursor: pointer;
  transition: background var(--transition), color var(--transition), transform var(--transition);
  text-decoration: none;
  white-space: nowrap;
}

.btn:focus-visible {
  outline: 2px solid var(--color-accent);
  outline-offset: 3px;
}

.btn-pill {
  border-radius: var(--radius-pill);
  padding: 14px 28px;
}

.btn-primary {
  background: var(--color-primary);
  color: var(--color-bg);
}

.btn-primary:hover {
  background: var(--color-primary-hover);
  color: var(--color-bg);
}

.btn-cta {
  padding: 16px 32px;
  font-size: 15px;
  min-width: 220px;
}

.btn[disabled] {
  opacity: 0.6;
  cursor: not-allowed;
}

/* ----- Sections (shared) ----- */

main {
  display: block;
}

section {
  padding: var(--space-3xl) var(--space-md);
}

.eyebrow {
  font-family: var(--font-body);
  font-size: 11px;
  font-weight: 400;
  letter-spacing: 0.2em;
  text-transform: uppercase;
  color: var(--color-text-secondary);
  margin: 0 0 var(--space-md) 0;
}

.eyebrow-on-dark {
  color: var(--color-dark-text-secondary);
}

/* ----- Hero ----- */

.hero {
  max-width: var(--content-max);
  margin: 0 auto;
  padding-top: var(--space-xl);
  padding-bottom: var(--space-2xl);
  text-align: left;
}

.hero-headline {
  font-family: var(--font-display);
  font-weight: 400;
  font-size: clamp(44px, 8vw, 88px);
  line-height: 1.05;
  letter-spacing: -0.02em;
  margin: 0 0 var(--space-md) 0;
  max-width: 18ch;
}

.brand-statement {
  font-family: var(--font-display);
  font-weight: 400;
  font-size: clamp(22px, 3vw, 32px);
  line-height: 1.3;
  letter-spacing: -0.01em;
  color: var(--color-text);
  margin: 0 0 var(--space-md) 0;
  max-width: 28ch;
}

.hero-subhead {
  font-size: clamp(16px, 1.6vw, 18px);
  line-height: 1.6;
  font-weight: 300;
  color: var(--color-text-secondary);
  margin: 0 0 var(--space-lg) 0;
  max-width: 56ch;
}

/* ----- Beats ----- */

.beat {
  overflow: hidden;
}

.beat-alt {
  background: var(--color-bg-shift);
}

.beat-inner {
  position: relative;
  max-width: var(--content-max);
  margin: 0 auto;
}

.beat-number {
  font-family: var(--font-display);
  font-weight: 400;
  font-size: clamp(140px, 22vw, 280px);
  line-height: 1;
  color: var(--color-text);
  opacity: 0.04;
  position: absolute;
  top: 0;
  right: 0;
  pointer-events: none;
  user-select: none;
  letter-spacing: -0.04em;
}

.beat-headline {
  font-family: var(--font-display);
  font-weight: 400;
  font-size: clamp(32px, 5vw, 56px);
  line-height: 1.2;
  letter-spacing: -0.015em;
  margin: 0 0 var(--space-lg) 0;
  position: relative;
  z-index: 1;
}

.beat-aside {
  font-size: clamp(14px, 1.4vw, 16px);
  line-height: 1.6;
  font-weight: 300;
  color: var(--color-text-secondary);
  max-width: 48ch;
  margin: 0;
}

/* ----- Belief ----- */

.belief {
  text-align: center;
}

.belief-headline {
  font-family: var(--font-display);
  font-weight: 400;
  font-size: clamp(32px, 5vw, 56px);
  line-height: 1.2;
  letter-spacing: -0.015em;
  margin: 0 auto var(--space-md) auto;
  max-width: 22ch;
}

.belief-supporting {
  font-size: clamp(14px, 1.4vw, 16px);
  line-height: 1.6;
  font-weight: 300;
  color: var(--color-text-secondary);
  max-width: 52ch;
  margin: 0 auto;
}

/* ----- Waitlist (dark island) ----- */

.waitlist {
  background: var(--color-dark-bg);
  color: var(--color-dark-text);
}

/* In dark mode the page background is already Deep Forest, so the waitlist
 * island lifts forward to Forest Mid and its inputs recede into Deep Forest.
 * The depth ladder inside the section is preserved, just inverted. */
@media (prefers-color-scheme: dark) {
  .waitlist {
    background: var(--color-dark-surface);
  }

  .waitlist-form input[type="email"],
  .form-message-success,
  .form-message-error {
    background: var(--color-dark-bg);
  }
}

.waitlist-inner {
  max-width: 640px;
  margin: 0 auto;
  text-align: center;
}

.waitlist-heading {
  font-family: var(--font-display);
  font-weight: 400;
  font-size: clamp(36px, 5vw, 56px);
  line-height: 1.1;
  letter-spacing: -0.02em;
  color: var(--color-dark-text);
  margin: 0 0 var(--space-md) 0;
}

.waitlist-lede {
  font-size: clamp(15px, 1.5vw, 17px);
  line-height: 1.6;
  color: var(--color-dark-text-secondary);
  margin: 0 0 var(--space-lg) 0;
}

.waitlist-form {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-sm);
  justify-content: center;
  align-items: stretch;
  margin: 0 auto var(--space-sm) auto;
  max-width: 520px;
}

.waitlist-form input[type="email"] {
  flex: 1 1 240px;
  min-width: 0;
  font-family: var(--font-body);
  font-size: 15px;
  font-weight: 400;
  padding: 16px 22px;
  border-radius: var(--radius-pill);
  border: 1px solid var(--border-dark);
  background: var(--color-dark-surface);
  color: var(--color-dark-text);
  transition: border-color var(--transition), background var(--transition);
}

.waitlist-form input[type="email"]::placeholder {
  color: var(--color-dark-text-secondary);
}

.waitlist-form input[type="email"]:focus {
  outline: none;
  border-color: var(--color-primary);
}

.waitlist-form input[type="email"]:focus-visible {
  outline: 2px solid var(--color-accent);
  outline-offset: 3px;
}

.waitlist-form .btn {
  flex: 0 0 auto;
}

.turnstile-container {
  flex: 0 0 100%;
  display: flex;
  justify-content: center;
}

.turnstile-container:empty {
  display: none;
}

.form-meta {
  font-size: 12px;
  color: var(--color-dark-text-secondary);
  margin: var(--space-sm) 0 0 0;
}

.form-message {
  margin: var(--space-md) auto 0 auto;
  padding: var(--space-sm) var(--space-md);
  border-radius: var(--radius-md);
  max-width: 520px;
}

.form-message-success {
  background: var(--color-dark-surface);
  color: var(--color-dark-text);
  border: 1px solid rgba(192, 144, 64, 0.4);
}

.form-message-success p {
  margin: 0;
  font-family: var(--font-display);
  font-size: 18px;
}

.form-message-error {
  background: var(--color-dark-surface);
  color: var(--color-dark-text);
  border: 1px solid rgba(192, 144, 64, 0.4);
  font-size: 14px;
}

/* Hide the form after success */
.waitlist.is-success .waitlist-form,
.waitlist.is-success .form-meta {
  display: none;
}

/* ----- Footer ----- */

.footer {
  padding: var(--space-lg) var(--space-md);
  text-align: center;
  border-top: 1px solid var(--border-light);
}

.footer-wordmark {
  font-family: var(--font-display);
  font-size: 14px;
  letter-spacing: 0.01em;
  color: var(--color-text);
  margin: 0 0 var(--space-xs) 0;
}

.footer-meta {
  font-size: 12px;
  color: var(--color-text-secondary);
  margin: 0;
}

/* ----- Responsive ----- */

@media (max-width: 600px) {
  .nav {
    padding: var(--space-sm);
  }

  section {
    padding: var(--space-xl) var(--space-sm);
  }

  .hero {
    padding-top: var(--space-lg);
    padding-bottom: var(--space-xl);
  }

  .beat-number {
    top: 0;
    right: 0;
    opacity: 0.05;
  }

  .waitlist-form {
    flex-direction: column;
    align-items: stretch;
  }

  .waitlist-form input[type="email"] {
    flex: none;
  }

  .waitlist-form .btn {
    width: 100%;
  }

  .btn-cta {
    width: 100%;
    min-width: 0;
  }
}

@media (prefers-reduced-motion: reduce) {
  * {
    transition: none !important;
    animation: none !important;
    scroll-behavior: auto !important;
  }
}